Time-stamp.



' M. W. OBERMILLER.

TIME STAMP.

APPLICATION FILED NOV. 1a, 1908.

916,001. 7 Patented Mar. 23, 1909.

2 SHEETSSHEET 1.

I EVWII/I/ M. W. OBERMILLER.

TIME STAMP.

APPLICATION FILED NOV.18, 190s.

Patented Mar. 23, 1909 2 SHEETS-SHEET 2.

ed 010% e Q Vihwouo m.

MAX w. oBEnMI-LLER,

or NEW YORK, N. Y.

Tum-STAMP.

No. 916,001. Specification of Letters Patent. ratenteamaiches, 19 09.

' Application filed November is, 1908. Seria1No.463,258.

To all whom it my camera.-

Be it known that I, MAX W. OBERMILLER, a citizen of the United States, residing at New York city, in the county and State of New York, have invented certain new and useful-Improvements in Time-Stamps; and I spring 10 -.'whose' Q clear,

mg in threadedend passes through the rear do hereb declare the following to be a full, an exact description of-the invention, such as will enable others skilled in the artto which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of re =erence marked thereon, which form a part-of this specification.

My invention relates to time stamps, and has for its object to provide such'a stamp which can be connected to any suitable. electrically operated clock system, and in which the type wheels cannot be accidentally rnovedduring use. p 1 i Referring to the drawings, in which like parts are similarly designated-Fi ure 1' isaf verticallongitudinal sectionthroug the case: showing the main operative parts eleva t on. 2 is asection through the type wheel mechanism on line et -ref Fig. 4,

showing the type wheels in locked position. Fig. 3 is an end view. Fig. 4lis a bottom; view. Fig. 5 is a perspective view of the locking pawls and their actuating levers. Fig. 6 1s a view of the various ratchet-wheels, and Fig. .7 viewsof the pawls that operate said'ra-tchet wheels. 1 Referring more-particularly toFig.-1, 2 is the base .p ate to which is secured the'substantially rectangular base frame 3 which is contained the parts for operating the t'y' e wheel mechanism and on which is secured a casing or rinting frame 4 containing the type whee mechanism, the type when .in. printi position projecting through an open t e top of frame 4, as is customary. In the usual and well known manner I pivot at 5 in the base frame 3 a sw' ging platen arm 6 in whose free end is pivoted or otherwise secured, as at 7 ,a platen head 8.. Depending from the platen arm his a limiting lug 9. to which is connected one end of a rretgractmg other end is oonneetedto-an adjusting'scre 11 mounted in in s depending front-the topof the ase'fharne' essipring normally holds the'arm' e in the dott' line'position. by lock-nut- 14. The core 15 of the so.- mom is threaded at one' -end, .16, which. of base a cand e...

4 The screw 11 is locked wires '19 to which the ends of the solenoid winding are secured pass through an insulatin'g bushing 20. On the other end of the core 15 is-an ivory, bone, orother suitable point 21 to prevent the arniatur mg to the core after the current has ceased passing through the solenoid. At the sides of the. base frame pivotally mounted This armature has p adjustable connecting rod '24 whose opposite end'is pivotally connected. toan actuating lever 2-5 pivoted'at its lower end at 26 in a suitable bearing connected to the base 2. In

frame 3 is a set screw 27 to limit the movement or swing of' the armature 23 The lever 25 is urged against the .pull of the armature by a spring 28 connecteCL-to an adjust upper end a fork 30 whichLe-ngages a rorl 31 mounted to swing about. the center of the ty e w-heelsmounted inthe printing frame 4.

l. 'eferrin 'now to 2, 3 and 4, I have shown a .pfurality'ot type wheels inde enden-tly. movable about a shaft 32, i an for thepurposes ofillustration- I have shown type whecl's forsthe' month,the units and the tens of the days df themonth, for the hours,

' d the year,

rt thereof there. isle-ratchet wheel. These ratchet-wheels are shown in Fig.

is'hown :Fig; .pawithat .is' tolop :ratohetqwheel B I :no tch 38,i:s'o that when thepawl enters notch, it allows the next longest pawl c to e from stick- 3 are lugs 22 in which. is. the swinging armature 2'3.-

ivoted toit one endof an I lug 13 depending from the top of thebase Thenodifil that is'actuated by the arms 33 ofanoscil th .fmme"34-is pivoted ;6. whiie'the respectivepawis-ffor {actuating them 7. .The-longest pawl,- i .-e-.,'.the

erate the units of the lutes, is the pawl-b cooperating with its that .is provided a.

frame 3 and is rigidly held thereto by a nut The otherend of the core 15 su ports the solenoid 18. The electric oon uctor "able screw 29. 'lhc leverf25 carries at its tort-he units and .forthetens of the minutes,

:A."M;or,-'1 M., and: 7 type wheels, '11; a, V

"but .areset I loo ed.to eachiofuthertype wheels or forming a engage its ratchet wheel C, so that both the units of minutes and the tens of minutes -will be. rotated one step simultaneously.

- riphery of the wheel between the notches is divided from zero tosix. When the notches 38 and 39 are in alinement the awls b and 0 enter them and permit the thir longest pawl d to engage its ratchet wheel D, an thus rotate the hour wheel one step. The hour ratchet wheel I) is rovided with a notch 40, and when the notc1'es38, 39 and 40 are in alinement, the pawl D enters,this notch and permits the pawl (1 adjacent the pawl d to engage ratchet wheel D and thus rotate the units of days one step. The ratchet wheel when in a inement with the other notches permits the pawl e to engage its ratchet wheel D also provided with a notch 41, which E and rotate the tens of days wheel one step.

The )awl it engages the ratchet wheel A provided with notches 42, which ratchet wheel contains alternatingly thedesignations A. M. and P. M., and is moved one ste every twelve hours. Riding on the severa ratchet wheels are pawls 43,-Lurged by leaf sprin s 44 that are held in place by a bar 45. hese pawls prevent the ratchet wheels from being reversely turned. Mounted in the frame 4 is the rod 46 on which is pivoted a locking )awl frame 47 carrying locking pawls'48, one for each ratchet wheel. These pawls are simultaneously urged into engagement with their .respective' wheels by coil spring 49. The frame carries two cam arms 50 and 51,

' each acted upon by an end of the shaft or bar 31, which is directly moved by the actuating lever 25. The arm 50 curves beneath one end of the rod 31 and has an upper cam,

face 50 so that when the bar 31 is swung to oscillate from 34 to the position shown in Fig. 2, this cam face is moved down to move and hold the detent pawls 48 into en agement with their respective ratchet w eels' when the actuating pawls have completed or about completed their operative swinging, and u on a reverse motion, 'i. a, to the os1 tion s own in Fig. 3, the other end 0 the rod 31 engages the lower faces of the cam arm 51 to positively lift these detent pawls to permit the actuating pawls 36 to move the res ective ratchet wheels one step before loc 'ng the wheels against movement.

The detent awls 43 prevent the reverse movement of tfie ratchet .wheels at any time, but the pawls 4S lock the wheels into the position to which they have been moved by the pawls 36 and prevent any accidental movement of the type wheels between the periods of movement, '0. e., as here indicated, periods of one minute. Any'other time interval may be chosen to suit the time interval of the particular clock system with which the stamp is to be connected.

The two end type wheels, for the months and for the years, and which are rotated by hand are'provided with ratchet wheels-E and E similar to the one E and are engaged by pawls 43 and 48 to prevent their accidental movement.

It will be observed that the locking pawls 48 and their frame 47 are positively moved I into and out of locking position by the oscil lation of the actuating pawl frame 34 that carries the rod'31.

1. In a time stamp the combination with the type wheels and their pertaining ratchet wheels, oscillating pawls cooperating with ratchet wheels to rotate them and a frame in whichv said pawls are mounted; of locking pawls and means operated by the movement of the oscillating paWLframe to positively move the locking pawls into and out of locking position.

2. In a stamp the combination with the type wheels and their pertaining ratchet wheels, an oscillating pawl frame and progressing pawls therein cooperating-with one. or more of the ratchet wheels to rotate them; of locking pawls and means operated by the movement of. the oscillatin pawls and. frame to positively move the locking awls into and out of operative position and force the lockingpawls against their res ective wheels at the end of the travel of sai pawl frame.

3. In a stamp the combination with the type wheels and their pertaining ratchet wheels, an oscillating pawl frame and pawls therein cooperating with one or more of the ratchet wheels to rotate them; of locking pawls, cams-for opleratin said pawls, and means carried by t e osci ating pawl frame to enga e 'the cams to simultaneously and positive y move the locking pawls into and out of engagement with the ratchet wheels. v

4. In a time stamp the combination with the type wheels and their pertaining ratchet wheels and an oscillating pawl frame; of a rod carried .in said frame, a locking awl frame having locking pawls and cams t ereon, said cams being located in the path of said rod whereby. the locking pawl frame is ositively moved by'said rod to. move the coking 1pawls into and out of lockin position witi respect to the ratchet wheeIs.

5. In a time stamp the combination with the type wheels and their pertaining ratchet wheels and, an oscillating pawl frame having arms; of a rod carried in the arms of said frame and projecting there through a locking pawl frame having locking pawls and two cam arms extendingl in the path of the prowheels and detent pawls, and anoscillatingwith their respective Wheels at the end of the 10 pro ressing, awl frame; of a rod carried by, progressing movement of the Wheels. sai frame, ocking pawls movable as a unit, In testimony that I .claim the foregoing as two cam arms on said locking pawls located my invention, I have signed my name in in the path of said fed, the cam face of one of presence of two subscribin Witnesses.

-said arms beingabove and the other below MAX'W. O ERMILLER.

said rod and one of the arms p'rovidedwith an Witnesses: V enlargedicam face at its end, whereby the W.;HOMMEL, locking pawls are forced into engagement QGEORG-E A. WARD. 

